# str = "day day up"
# for i in range(len(str)):
#     print(str[i],end='')
# list1 = []
# list1[0] = 1
# list1[1] = 2
# list1.append(3)
# list1.append(4)
# list1.append(5)
# print(list1)

#list2 = [1,2,3]
# list3 = list(list2)
# print(list3)

list2=[1,2,3]
for i in list2:
    print(i)
list2.insert(1,10)
print(list2)
list2.extend([11,22])
print(list2)
# list2.sort()#默认升序
# print(list2)
list3=sorted(list2)
print(list2)
print(list3)

# 删除
# del list3
# print('++++++++++')
# print(list3)

list4=[1,3,5,7,9]

list5 = [i for i in range(1,10) if i % 2 !=0]
print(list5)

str=('111',)
print(type(str))

